Respuesta :

[tex] \bf x-1.6=2.4+0.8x\implies \stackrel{\textit{subtracting 2.4}}{x-4=0.8x}\implies \stackrel{\textit{subtracting x}}{-4=0.8x-x}
\\\\\\
-4=-0.2x\implies \cfrac{-4}{-0.2}=x\implies 20=x [/tex]